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Curtiss F11C Goshawk / Hawk II / BFC-2

 

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F11C Goshawk

On 16 April 1932, the US Navy ordered two prototypes of a shipboard fighter designated XF11C-1 and XF11C-2. The XF11C-1 was powered with a 600hp Wright R-1510-98 two-row radial and the XF11C-2 with a 700hp Wright R-1820-78 single-row radial.

The XF11C-2 was a company demonstrator, which had been flying for some time, and was of mixed construction (fabric covered wooden wings and fabric-covered metal fuselage and tail surfaces), whereas the XF11C-1, which utilised the wings of the YP-23, was of fabric-covered all-metal construction and was delivered in September 1932. The R-1820-78 Cyclone and mixed structure of the XF11C-2 found favour with the US Navy, and, on 18 October 1932, a production order was placed for 28 F11C-2s, deliveries of which began in February 1933 and were completed in the following May. The fourth aircraft on the contract was completed with a manually-retractable undercarriage as the XF11C-3, subsequently being redesignated XBF2C-1 with adoption of the "bomber-fighter" category in March 1934. Simultaneously, the F11C-2s were redesignated as BFC-2s. Armament comprised two 7.62mm Browning machine guns and a single bomb of up to 227kg or four 51kg bombs could be carried. The BFC-2 remained in US Navy service until 1938.

 

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Hawk II

The Hawk II was essentially an export version of the XF11C-2 with a Wright R-1820F-3 Cyclone rated at 710hp at 1676m and 356 litres of fuel, the Hawk I differing in having only 189 litres of internal fuel. Only the Hawk II was exported in quantity, this having a mixed construction similar to that of the F11C-2 and normally carrying an armament of twin 7.62mm machine guns. The first customer for the Hawk II was Turkey, which began to take delivery of 19 on 30 August 1932, Colombia following suit from the end of October 1932 with an initial batch of four twin-float-equipped Hawk IIs. A total of 26 float fighters of this type was delivered to Colombia by the end of July 1934. Nine were supplied to Bolivia, of which three had interchangeable wheel/float undercarriages; four were delivered to Chile, 52 to China, four to Cuba, two to Germany, one to Norway and 12 to Thailand.

 

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Hawk II


XF11C-2 Hawk II
Engine: Wright R-1820F-3 Cyclone, 710hp
Take-off weight: 1758 kg
Empty weight: 1317 kg / 2904 lb
Wingspan: 9.60 m / 31 ft 6 in
Length: 8.08 m / 26 ft 6 in
Height: 2.97 m / 9 ft 9 in
Wing area: 24.34 sq.m / 261.99 sq ft
Max. speed: 301 km/h / 187 mph
Range: 666 km / 414 miles
Fuel capacity: 356 lt

F11C-2 / BFC-2
Engine: 1 x Wright R-1820-78, 515kW
Take-off weight: 2104-2300 kg / 4639 - 5071 lb
Empty weight: 1515 kg / 3340 lb
Wingspan: 9.6 m / 31 ft 6 in
Length: 7.6 m / 24 ft 11 in
Height: 3.2 m / 10 ft 6 in
Wing area: 23.5 sq.m / 252.95 sq ft
Max. Speed: 320 km/h / 199 mph
Cruise speed: 250 km/h / 155 mph
Ceiling: 7400 m / 24300 ft
Range w/max.fuel: 920 km / 572 miles
Range w/max.payload: 460 km / 286 miles
Armament: 2 x 7.62mm Browning machine-guns, 227kg or four 51kg bombs
Crew: 1

 

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Curtiss F11C Goshawk

 

 


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